<mat-list>
    <mat-list-item>
        <mat-form-field class="full-width">
            <input type="text" placeholder="搜索" matInput [(ngModel)]="search">
        </mat-form-field>
    </mat-list-item>
    <mat-list-item *ngFor="let article of articleList | searchInfos: search" routerLink="article/{{article.id}}">
        <h3 matLine> {{article.title}} </h3>
        <mat-divider></mat-divider>
    </mat-list-item>
</mat-list>
